Characteristics of surface waves in LHM-ferrite-semiconductor waveguides

Abstract

The paper is concerned with the propagation characteristics of magnetostatic surface waves in a layered structure consisting of a ferrite (yttrium iron garnet) slab, semiconductor, a left handed material (LHM) and metal plate. In (LH) cover both permittivity and magnetic permeability are negative in definite frequency range. We study dispersion properties of the magnetostatic surface waves. We found that the existence of the left handed material stimulates the forward traveling magnetostatic surface waves to be backward traveling and vice versa. We also found that higher values of wave frequency are obtained for relatively thick ferrite films.